
@keyframes roll {
    from{
        left:0;
    }
    to{
        left:-34%;
    }
}
#roll{
    width:100%;
    background-color: black;
    overflow: hidden;
}
#roll ul{
    width:400%;
}
#roll ul li{
    position: relative;
    float:left;
    margin-right:0.5%;
    width:8%;
    animation:roll 10s infinite linear;
}